JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 3B - No. 4 x 48 Face Mill Arbors - Through Coolant Please allow 24–48 hours for

Please allow 24–48 hours for despatch as production is on demand

with a taper shank for secure mounting and a left-hand spiral flute paired with right-hand cutting to help control chips and deliver a clean finish

while the left-hand flute aids chip evacuation to reduce binding during reaming

Toolex Reamer with a straight shank and spiral flute delivers precise hole finishing for machinists and shops that need reliable enlargement and finishing of existing holes

Ideal for refurbishing worn holes

JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 3B - No. 4 x 48 Face Mill Arbors - Through Coolant Please allow 24–48 hours forThe JBO Thread Plug Gauge is a precision inspection tool designed to verify UNF threaded holes with a reliable Go No Go test. Sized No. 4 x 48 with a Right Hand orientation and 3B tolerance, its ideal for manufacturing, automotive, and aerospace quality control where quick, objective thread checks are essential. Use this gauge to confirm hole conformance before assembly, ensuring threads will accept fasteners and components with consistent fit and